PROBLEM TO BE SOLVED: To provide a water tank decoration having a practical structure and capable of easily removing organic substances in a water tank.SOLUTION: A water tank decoration is provided with: a floor material 2 that has a lot of passing water holes 21, an upper surface decorated to imitate a bottom of water of the natural world, and a lower surface arranged to face the bottom of a water tank 1 with leaving a space, the floor material 2 also having a recovery chamber 26 provided in the vicinity of a corner of the water tank 1 by partitioning a part of the space and an impeller 4 (stirrer) that consists of a motor 41 to circulate water in the space, a rotary shaft and a blade 43.COPYRIGHT: (C)2014,JPO&INPIT【課題】現実的な構成で水槽内の有機物を簡単に除去することのできる水槽装飾体を提供することにある。【解決手段】多数の通水孔21を有し、上面が自然界の水底に似せて装飾され、下面が水槽1の底面と間隔を空けて対向するように配置される床部材2であって、水槽1の一角付近に前記間隔の一部を仕切って設けられた回収室26を有する床部材2と、前記間隔内の水を回流させるモータ41、回転軸及び羽根43からなる羽根車(攪拌機)4とを備える。【選択図】図3
